Table 3.

Skin sensitisation and respiratory allergies among 1659 Italian military cadets according to an index of exposure to Toxoplasma gondii, Helicobacter pylori, and hepatitis A virus. Values are numbers (percentages) of participants unless stated otherwise

Index of exposure to orofecal and foodborne infections
0 (n=796)1 (n=618)2 or 3 (n=245)P value *
Prevalence of sensitisation to allergens (weal ≤3 mm)
Dermatophagoides pteronyssinus160 (20.1)99 (16.0)27 (11.0)0.001
Cat68 (8.5)38 (6.1)6 (2.4)0.001
Alternaria alternata15 (1.9)10 (1.6)1 (0.4)0.140
Mixed grass118 (14.8)75 (12.1)21 (8.6)0.008
Parietaria judaica65 (8.2)53 (8.6)12 (4.9)0.212
Olea europaea21 (2.6)15 (2.4)3 (1.2)0.255
Artemisia vulgaris14 (1.8)9 (1.5)1 (0.4)0.151
Respiratory allergic disease
Allergic rhinitis (with or without asthma)123 (15.5)82 (13.3)16 (6.5)0.001
Allergic asthma (with or without rhinitis)38 (4.8)21 (3.4)1 (0.4)0.002
Total (allergic rhinitis or asthma)134 (16.8)89 (14.4)17 (6.9)0.000
  • * Test for linear trend.